JEE Main AITS 2025: Embibe has taken a significant step in revolutionising the JEE Main preparation landscape with its JEE Main All India Test Series....
JEE Main All India Test Series 2025: Ace Your JEE Exam On First Attempt
May 13, 2024If you are studying electronics, logic gates are a crucial concept to understand. These significant computer tools mostly rely on the Boolean function. To perform logical operations on one or more binary inputs and produce a single binary output, logic gates are used. The electronic circuits of a digital system are known as logic gates.
A logic gate’s primary requirements are that it accept a variety of inputs and, depending on the desired logic function, drive one or more outputs. Additionally, the output must be able to drive numerous inputs, necessitating the use of some sort of amplification. We refer to this as fan-out and state that an output can power, say, 50 inputs. The best amplifiers we have come up with so far use semiconductors. Amplification in electrical circuits entails some type of transistor operation. Continue reading to learn more about logic gates in electronic devices semiconductors.
A truth table that lists all possible input-output combinations is present for each logic gate, which is represented by a symbol. In short, the truth tables make it easier to comprehend how logic gates behave. Semiconductor devices are used to create these gates. The top five logic gates in use are:
Input (A) | Output (Y) |
0 | 1 |
1 | 0 |
Input | Input | Output |
A | B | Y |
0 | 0 | 0 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 1 |
Input | Input | Output |
A | B | Y |
0 | 0 | 0 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 1 |
Input | Input | Output |
A | B | Y |
0 | 0 | 1 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 0 |
Input | Input | Output |
A | B | Y |
0 | 0 | 1 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 0 |
Devices that operate in accordance with temperature variation are known as semiconductors. Binary digits 1 and 0 are found in computational logic, respectively. Logic gate uses semiconductors because they are versatile switches that can quickly change between these states (0 for off and 1 for on). Complex computation-related logics are produced by the combinational or sequential logic of such devices.
Talking about electronic semiconductor devices in logic gates, semiconductor devices like diodes are used to create logic gates. Diode combinations are created such that they provide the necessary logic. Reverse bias mode is used to prevent the current from passing whereas forward bias mode is used to pass the current. The desired logic is achieved by using a large number of diodes in forward and reverse bias mode. Students must understand the reason why electronic semiconductor devices are used in logic gates before moving ahead.
Different voltage levels represent high or low binary situations. As the circuit analyses data, a terminal’s logic state can—and typically does—change frequently. The low state of the majority of logic gates is roughly zero volts (0 V), whereas the high state is roughly five volts (+5 V).
Transistors, diodes, and resistors can all be used to create logic gates. Commonly, resistors are used as pull-up or pull-down resistors. When there are any open logic gate inputs that need to be connected to a logic level 1 or 0, pull-up and pull-down resistors are used. This stops any incorrect gate switching. Pull-down resistors are wired to ground, and pull-up resistors are wired to Vcc (+5V) (0 V).
We hope this short article on Electronic Semiconductor Devices Used in Logic Gates has been helpful to you. Stay tuned to Embibe for such informative articles. Happy learning!